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| author | Dmitry Adamushko <dmitry.adamushko@gmail.com> | 2007-10-15 17:00:14 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2007-10-15 17:00:14 +0200 |
| commit | e62dd02ed0af35631c6ca473e50758c9594773cf (patch) | |
| tree | 5bc942a91fac6e48d046997bef8dbfcb9c3a8d3b /kernel/sched_fair.c | |
| parent | ace8b3d633f93da8535921bf3e3679db3c619578 (diff) | |
| download | lwn-e62dd02ed0af35631c6ca473e50758c9594773cf.tar.gz lwn-e62dd02ed0af35631c6ca473e50758c9594773cf.zip | |
sched: fix group scheduling for SCHED_BATCH
The following patch (sched: disable sleeper_fairness on SCHED_BATCH)
seems to break GROUP_SCHED. Although, it may be 'oops'-less due to the
possibility of 'p' being always a valid address.
Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_fair.c')
| -rw-r--r-- | kernel/sched_fair.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 410b77aea216..3ac096e74faf 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -485,9 +485,8 @@ place_entity(struct cfs_rq *cfs_rq, struct sched_entity *se, int initial) vruntime += sched_vslice_add(cfs_rq, se); if (!initial) { - struct task_struct *p = container_of(se, struct task_struct, se); - - if (sched_feat(NEW_FAIR_SLEEPERS) && p->policy != SCHED_BATCH) + if (sched_feat(NEW_FAIR_SLEEPERS) && entity_is_task(se) && + task_of(se)->policy != SCHED_BATCH) vruntime -= sysctl_sched_latency; vruntime = max_t(s64, vruntime, se->vruntime); |